Shock absorber



Aug. 14', 1923.

D. B. D. BLAKE SHOCK ABSORBER 2 Sheets-Sheet l Filed July 22 1922 l naunuunnuillrll AugV 14, 1923 D. B. D. BLAKE SHOCK ABSORBER Filed July 22 1922 2 Sheets-Sheet 2 "dy f 4 TTRIVE YS Patented Augfr14, 1923. I

l UNITED STATES Param orifice,

' primis s. D. BLAKE, or QUINcm-Innmors.- A. 2

Yappummn mea July '22, i922. serial m. arenas.

naaL-ffshk tseberx j Anob'ect of this invention is to provide .ineens w eeby quick and simple adjustment of the plarts maybe achieved. l

Anot er object resides in,the provision of meanswhereby the device can. be eilicientl and' economically manufactured and assem led and disassembled.

' which yare hereinafter descri A-further ob'ect resides in the provision of means wherelb the' tension of the s ring used can be quic y adjusted indepen ently of otheradjustments.

A still further object resides inthe articular construction and arran ment o parts gsd and claimed and shown in the accompanying drawings.

The invention is illustrated in the drawin?2 of'whichigure l1 is a vertical lon tudinal section taken on the line 1-1 of `ig. 2.

Fig. 2 is a vertical transverse section taken on the line 2-2 of Fig. 1.

Fig. -3 is a side elevation of the device.

Fig. 4 is a side elevation of the base plate. Fig. 5 is a side elevation ofthe friction collar. I

Fig. 6 is a section of the base plate taken on the line 6 6 of Fig. 4.

Fig. 7 is an end elevation of the adjustment'sleeve.

The form of the invention shown in the drawings is aV referred form, although it is understood t at modifications in the construction and arrangements of the parts lund in the character of the materials used may be adopted ,Without departing from the spirit of the invention. l

The invention as shown in the drawings, which illustrates one preferred form the invention may assume, includes a base plate .1 having a flange 2 and rearwardly extending bosses 3 and (see Fig. 6) which disposed apertures 5 aild 6. These bossesform pockets ,7 and 8 'in` .which lie` the heads of bolts, or nuts, adaptedto fasteiithe base plate to any suitable portion of thelfram of the automobile 'or other device on which the absorberfis mounted. The base plate is provided l'witha centralpliublaving a threadedl aperture 10 therein to 'r'emreive the threaded end 11 of a center bolt 12 having a head 13.' f

A consideration. 'ofthe interiorA formation of the base plate'shown-in Fig. 4 willgdis.- oriproieties 14' all ofthev close a lurality of 1u and 15 dlsposedalongt e inner gv base' late and preferably'about 60 apart 1n a ine radial to therenter lof the base plate and on the opposite side therein from a recess 16. In. this recess 16 Ja clamping plate 17 is disposed. Thisfclamping plate 1s adapted to be .adjusted by the engagement therewith of a set screw 18 having a head 19 and adapted to be locked in position by a jam nut 20. The inner face 21 of this ,clamp- 'mg plate is `curved and ada Vtedio-.13611.11 a inst the curved edge of a 'ctiou.` collar p ate 22. The eripher)r of this plate is ovided with a p uralit of notches or in entations 23 shaped s' arly to the lugs or `projeetious 14 and 15 and spaced a corresponding distance apart around the periphery of the friction collar plate. In these notches the lugs or projections 14 are adapted to lie in the manner shown in Fig. 1, and then by reason of the clamping engagement of the plate 17 the friction collar plate 22 can be held in any desired position.

As shown in Fig. 5, this collar plate 22 is i central aperture 25 somewhat larger than' the diameter of the bolt 12. This aperture is surrounded by a hub 26 und this in turh is surrounded by a. toothed ring 27 tho twrctli of `which are adapted to engage with similarly shaped teeth 28 on the inner end of an adjusting sleeve 29. This adjusting sleeve has its outer opposite end threaded as shown at 3U and also has a hexagonal head 3l. The bore 32 in the sleeve 29 is somewhat larger than the diameter of the bolt 12. .A washer :lll is disposed between the head 3l of the sleeve 2t) and the head 13 of the bolt l2. A lock nut lll. provided with an outwardly extending llange 35, is threaded on to the end of the adjusting sleeve 29, and a llange 34 bears against the edge of a central aperture in a cover portion 36 provided with a flange portion 37 lying adjacent and against the` [lange 2 of the base plate. It will be apparent from a consideration of Figs. l and 2 that the tightening of the bolt 12 will cause the adjusting sleeve 29 to bear against the collar plate 22, and this in turn will be forced against the inner face of the base plate 1. These elements are,therefore, held in lirm and rigid relation. `Moreover, the lock nut 34 bearing against the cover 36 will hold it tirinly in place so that it will properly enclose the other elements.

In Fig. 7 l illustrate an opening 38 in the side wall of the adjusting sleeve 29. This is to permit the end 39 of a spring 40 to be bent therearound and engage the adjusting sleeve. This spring 4U is then wrapped around the sleeve and the other end is bent around, as indicated at il, through a slot 42 in a spring easing 43. This spring easing is Iliade of any suitable material and is substantially rigid as compared to the flexibility of the spring 40. This easing in reality contines the spring within a delinite circumference but also serves as a livin support around which to wrap the layers ol l'ahrir 25. At 44 is shown one end of the fabric fastened to the casting in any` desired manner. the fabric beingvtliereal'ter wound around thc casting layer upon layer.

ln practice, when an adjustment ot the friction collar plate 22 alone is required, the jam nut 2U and the set screw 18 are unscrewed until the clamping plate i7 is free to more hark into the recess lli. whereupon by slightly releasing the renter bolt l2 and applying a wrench lo the hexagonal head 3l of the adjusting -sleeve 'if'. the whole as- Sembly of the ,spring 4U. the webbing or fabric 25 and the collar plate 22 may he rotated. to any desired position until a desired notch 21' engages with the lugs or projections 14 and lv. 'l'liis combined more` nient is possible because the teeth 2n of Ille adjnslingr sleeve and the correspondv ing teeth 2 o n the rollar plate 22 are held in engagepienl lvv oni)l parli)4 nus-mowing the center lnllts. l"urllurnn|r|, the aperlure 25" `nnil the aperture 31; ari suliiienlljl larger than ille dianuli-r ol' the vouler holtlQ lo pl rnlil. the lneessar-v lateral morena-nl late 22 to the lugs for rotating the friction collar engage the different notches wit or rojections 14 and l5.

f, however, only the tension of the spring -lU needs adjustment, the set screw 18, the jam nut 20 and the plate 17 should be lockedA rigidly and the center bolt 12 should be unscrewed until Athe teeth 28 on the adjusting sleeve 29 clear the corresponding teeth 2T on the collar plate 22. This permits the independent turning of the adjusting sleeve and the rotation of the same, the spring il() being wound or unwound by reason of the engagement of one end of it with the adjusting sleeve in the manner above described.

A Referring to Fi 1, it will be observed that any downwar pull on the free end of the webbing or fabric 25 will produce a corresponding movement in all the inside coils of webbing; and since the spring 40 folds around the adjusting sleeve 429, the necessary to :e to resist the spring action will be exerted through the spring casing 43, and a frietional resistance will also be exerted on the inside of the friction. Collar along that portion of it marked 45?'in Fig. 1, as well as along the outside of the colar along that portion marked 46 in Fig. 1.

One of the important features of my invention resides in the coils of webbing and the spring holt between the Bange or collar 24 and the adjusting sleeve 29, thus allowing full and free action to the coil spring and providing inside as well as outside frictional resistance to rebound shocks. This folding spring action also makes possible the constant spreading position of thecoils of webbing, as shown at 47 in Fig. 1.

The spring casing 43 serves the double purpose of confining the coil spring 40 to a proper outside diameter as well as providving the means vof attac ing the inner end of the webbing to the outer end of the spring. lt also forms a drain on which the webbing is rewound on the recoil action of the spring. lt will also be noticed that the width of this spring casing 43 is not as great as that of the webbing 25, and since the wcb bing is attached to the easing '13, and since the outer end of the spring 40 is attached to -the casing 43 through the slot 42 previously referred to, and since the-inner end of the` spring is eonlined in the slot 3B of the adjusting sleeve 29, this construction prevents a metal to metal contact of the moving parts` and eliminates the necessity for lubrication, making tho action of .the whole instrument exceedingly quiet.

With reference to the leek nut 34. this is preferably made of bronze, and a slot is l'ornied therein as indicated in Fig. 3 by the numeral 48. It will be seen that as the beveled surface 49 of this nut comes in. qontart with the opening in the cover 36, the slot la ill he decreased in width as the e qt t is pressed more firmly into position, andthe elasticity of the metal of the nut will allow the threads to grip vmore tightly the .threads of fthe -adjust .sleeve and thus remain' until'such, ip .is forcibly removed. g "fWhatIc ainisi l' 1. A. shriek absorber which includes a hase i. late having lugsxisthereon spaced apart, a

' clamping pla screw mounted on the base p Amounted, said collar plate havi ,'iniier face Aof the base plate, means for ad justixig the angular position of the collar Lplatejwith'in the base plate, a friction collar mounted n said collar plate and extending therefrom'ingthe formof a flange, teeth on the inner -Dce of said collarV plate, an adjust sleeve, teeth on the inner end of said sleeve` adapted to engage the teeth on the l r collarplate to lock the adjusting sleeve with respect to fthe collar plate', a coiled spring f the inner end of which is altachedto thc l adjusting 'lsleeve, a circular spring casingr connecte said-spring and to which the outer end'f die Spring 'is attached, apiunuity of layers of webbing or fabric wound around bolt having/a threaded end to'exteiid into said aperture, a collar'- late disposed against vvthe inner face of the ase plate, said collar plate having an -a erturetherein. substantially larger than e diameter of said bolt,

Van adjusting' slee've"surr6lindi`iig the' bolt vand having an aperture therein substantially larger than the diameter of the bolt,

and teeth on the inner falcer'of the collar plate and the inner,end.of the sleeve adapted to engage to hold the sleeve and .the collar plate in a determined angular, position, ,said

holt having a head bearing against the outer ends ofthe sleeve whereby the bolt will hold the sleeve, the collar plate and the base plate iii a definite position with to each other.

' 5. A shock absorber which includes a-base'E late having a threaded aperture therein, a

lt having a threaded end to extend, into said aperture, a collar plate disposed against the inner face of the base plate, said collar plate having an aperture therein substantially larger than the diameter of said bolt, an adjusting sleeve surrounding the bolt and having an, aperture therein substantially larger than the diameterof'the bolt, and

teeth on the inner faceofthecollar plate' and the inner end of the sleeve adapted`to engage to hold the sleeve and the collar plate in a determined angular position, said bolt having a head bearinghagainst theouter cnds of the sleeve whereby the bolt will holdV the sleeve, the eollarplate and the hase plate in a definite 'osition with respect to each the casin the inner end of the fabric being -ptlien said co lar plate having notches on webbin is moving, and a bolt extendihg be tween t e outereiid of the adjustingv slcve and the hase plate to hold the base plate, the collar plate and the adjusting sleeve in an assembled relation.

3. A shockabsorber which includes a base plate, a friction collar plate movably disposed tlierewithin, :i friction collar extending from said plate, in the form of a flange, an adjusting sleeve, a coiled spring connected at one end to said sleeve, a spring casing enclosing said spring to which the outer `end of the spring is connected, a plurality of layers of, .webbing wrapped around the casing afportion of said webbingr engaging with t e riction collar, means for adjusting the an base p ate, means for adjusting the angular position of the adjusting sleeve to determine the tension of the spring, and means for holding the base plate, the collar plaie und the adjusting sleeve 'man assembled rolat ion. 1 f 4, A shock absorber which includes :1 luist: plate having a threaded aperture thrrcin` a lar position of the collar within the tially larger than the diameter of said bolt, f

an adjusting sleeve surrounding the bolt and having an aperture therein substantially larger than the diameter of the bolt,vteeth on the inner face of the collar plate and the innemend of the sleeve adapted'to engfge to hold the sleeve and the collar plate in' a determined angular position, saidfblt having a head bearing against the outer ends of the sleeve whereby-the bolt will hold the izo sleeve, the collar plate and the base plate in :i denite position with respect t0 cach other, said collar plate having notches on its periphery, projections on the base plate adapted to engage in said notches to determine thc angular position of the collar plate with respect to the base plate, a clamping plate disposed against the edge of the collar plate opposite the projections on the base iso plate, and means for pressing the clamping the threaded portion of the adjusting sleeve, 10 plate against the edge of the collar plate. and a beveled surface to engage the edges 7. A shock absorber which includes a base of the aperture and cover, said lock-nut beplate having a peripheral ange, an adjusting split so that as the nut is threaded on 5 ing sleeve having an outer threaded portion, the sleeve .the engagement of the beveled a cuplike cover, the outer edges of which surface with the edges of the aperture and ll engage said flange on the base plate, said the cover will force the split ends of the nut cover having a central aperture, a flanged together to tighten it on the sleeve. lock nut having a threaded bore tn engage DENNIS B. D. BLAKE. 

